E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 01-04-2003, 07:57 PM   #1
hamann 330Ci
Registered User
 
Join Date: Aug 2002
Location: canada
Posts: 1,313
My Ride: 330Ci
Send a message via ICQ to hamann 330Ci
question about DSC

i've heard several story about people turning off DSC when racing another car. is that supposed to give u a better start??.......can someone explain this?
hamann 330Ci is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 01-04-2003, 08:05 PM   #2
schow36
Resident Communist
 
Join Date: Nov 2002
Location: Dirty south
Posts: 1,051
My Ride: 2003 TiAG 325i
Send a message via AIM to schow36
That way your car won't be grabbing at the ground when you launch...actually, I don't know what the hell I'm talking about.
__________________
schow36 is offline   Reply With Quote
Old 01-04-2003, 08:09 PM   #3
hamann 330Ci
Registered User
 
Join Date: Aug 2002
Location: canada
Posts: 1,313
My Ride: 330Ci
Send a message via ICQ to hamann 330Ci
but i thought u want traction to start off
__________________
hamann 330Ci is offline   Reply With Quote
Old 01-05-2003, 12:07 AM   #4
johnhab
Registered User
 
Join Date: Sep 2002
Location: Virginia
Posts: 690
My Ride: '02 330xi
Send a message via AIM to johnhab Send a message via Yahoo to johnhab
If you search the old threads, there should be something about it. If I recall correctly, it's to keep DSC from engine braking when the rear wheels start to spin at launch.
__________________
Better picture coming!

johnhab is offline   Reply With Quote
Old 01-05-2003, 12:22 AM   #5
hayaku
Registered User
 
Join Date: Aug 2002
Location: Irvine, CA
Posts: 159
My Ride: 02 M3 JB/BLK Cab
Send a message via AIM to hayaku Send a message via Yahoo to hayaku
DSC does alot of stuff.. but basically it brakes the wheel(s) that are spinning faster then the others. Corner braking. This helps keep the car stable and straight so you don't slide around.

In road course racing, you want to slide the rear to point the nose correctly at the apex of a turn. If you don't slide, then you go slower and therefore lose. People can drive very smoothly on a road course, and still slide with DSC on. But to be the fastest you can be, you are not smooth at all and need DSC off.

In drag racing, when your rears are spinning because you drop the clutch at a high rpm, your DSC will apply brakes... and you launch much slower.
hayaku is offline   Reply With Quote
Old 01-05-2003, 12:23 AM   #6
PHAHEEM
In Pursuit of My J.D.
 
Join Date: Oct 2002
Location: OC/SD, CA
Posts: 2,291
My Ride: Honda Accord
Send a message via AIM to PHAHEEM
With the DSC on, the car will realize that you're trying to put a lot of power down to your rear wheels, so the DSC kicks in and doesn't let as much power get to the wheels. With DSC off, you'll be able to spin your tires and be able to launch better. I hope that makes sense.
__________________

04 Triple Black 330CiC [sold]
02 TiAg 325Ci [sold]
PHAHEEM is offline   Reply With Quote
Old 01-05-2003, 12:28 AM   #7
Nick325xiT 5spd
BMW Land Barge
 
Join Date: Dec 1969
Location: Bethesda, MD
Posts: 1,378
My Ride: '04 M3 & '99 323i
Send a message via ICQ to Nick325xiT 5spd Send a message via AIM to Nick325xiT 5spd
And lets hope you're not racing on the street.
__________________
Nick325xiT 5spd is offline   Reply With Quote
Old 01-05-2003, 03:23 AM   #8
hamann 330Ci
Registered User
 
Join Date: Aug 2002
Location: canada
Posts: 1,313
My Ride: 330Ci
Send a message via ICQ to hamann 330Ci
haha i am not racing on the streets i need more mods for that ........i just wanna know why ..........thanks guys for the info
__________________
hamann 330Ci is offline   Reply With Quote
Old 01-05-2003, 03:42 AM   #9
TheFallen
Flying Low
 
Join Date: Sep 2002
Location: UCSD
Posts: 1,070
My Ride: 03 SMG II
Send a message via AIM to TheFallen
i generally have the DSC off at all times unless i'ts raining.. simply because it comes in unnecessarily sometimes at turns and when u first start the car the car will jerk a little as the brakes are applied and engine speed controlled...

i know it may not be the smartest thing to do, but much more control with DSC on and i definately feel like i'm driving and not being driven
__________________
Kevin
TheFallen is offline   Reply With Quote
Old 01-06-2003, 01:47 PM   #10
MarvelPhx
www.my330i.com
 
Join Date: Dec 1969
Location: Phoenix, AZ
Posts: 1,919
My Ride: E92335i,04ZHP,99M3
Send a message via AIM to MarvelPhx
www.my330i.com/dsc.php
__________________
MarvelPhx is offline   Reply With Quote
Old 01-06-2003, 03:06 PM   #11
tpzblu330ci
TheOnlyConstantIsChange
 
Join Date: May 2002
Location: Santa Cruz, CA
Posts: 4,235
My Ride: '11 Golf TDI
Send a message via AIM to tpzblu330ci
Yes DSC retards the engien combustions and forces the engine to make less power therefore stopping the lose of traction, with DSC off you can make all the power the engine is capable of and spin the tires freely, wasting valuables pieces of rubber compound from your extremely expensive tires, and causing a bad odor from the burning rubber, but it sure is fun
__________________
"Every man gotta right to decide his own destiny." - Bob Marley

'93 Toyota LandCruiser
tpzblu330ci is offline   Reply With Quote
Old 01-06-2003, 03:42 PM   #12
Artan5
life is a *****..........
 
Artan5's Avatar
 
Join Date: Aug 2002
Location: Dallas, Texas
Posts: 1,213
My Ride: 330ci :) RIP323i
Send a message via AIM to Artan5
racing on streets is bad.... M'kayyyy
Artan5 is offline   Reply With Quote
Old 01-06-2003, 03:50 PM   #13
Devious1
Invalid User
 
Join Date: Jul 2002
Location: Cerritos, CA
Posts: 10,830
My Ride: 330ci
Send a message via AIM to Devious1
Quote:
Originally posted by schow36
That way your car won't be grabbing at the ground when you launch...actually, I don't know what the hell I'm talking about.
__________________
Devious1 is offline   Reply With Quote
Old 01-06-2003, 04:09 PM   #14
nomoclutch
Registered User
 
Join Date: Dec 1969
Location: NYC
Posts: 23
My Ride: 330ci
Send a message via AIM to nomoclutch Send a message via Yahoo to nomoclutch
Turning off DSC

First - I hope we're talking about a track >wink<

I wouldn't agree that turning off DSC is always better.

The implication was that you NEED to "toss" the car through the corners. Despite what people may say "tossing" the car ALWAYS scrubs off speed! It may however help you find a shorter racing line through the course which saves time. The question is can you save more time getting the right line than is lost "tossing" the car. If you have a perfectly handling car that can get through the corner (with more driver practice) you will definitely be wasting speed. It looks cool, but nothing else. You don't see Montoya, Schumacher or Probst drifting through corners.

If you are on a road course or Auto-X, it completely depends on the car (its suspension, gearing and HP/Torque profile). Some cars do not respond AT ALL to this method.

My experience is it typically only applies to front-heavy cars or cars that otherwise understeer (like Mustangs). You can't get them pointed in the right direction (unless you have a seriously worked suspension). As a result you purposely let the back drift out by flicking the wheel. You lose a TON of speed, BUT with the big torque of the V-8 and the right gearing/shifting you can quickly get back to speed. A 300zx (NA) is classed the same in SCCA Auto-X with the Stang and z-28, but don't try the same approach as they don't have enough torque to pull this off. You MUST finese them through the corner. They are neutral handling for the most part and will not respond to this tossing. They can actually beat the v8 cars if you are real good.

Drag racing is another story ...

If you launch too hard, the trac control kicks in and cuts engine power. There seems to be a lag before the BMW will come back to full power, so maybe there is something to be said for turning it off - provided you can launch better than a computer. Still you don't want to spin your wheels at ALL if you can avoid it.
nomoclutch is offline   Reply With Quote
Old 01-06-2003, 05:22 PM   #15
MachRc
E46Fanatic
 
MachRc's Avatar
 
Join Date: Sep 2002
Location: City of Angels
Posts: 6,490
My Ride: 2003 Technik S1 M3
remember if u street racing..turning of dsc wont do jack...
you still cant burn out...turn DSC and ASC off. u know, the hold the dsc button 5 sec til brake light turn yellow trick.
becareful dsc if for turning..and asc if for tire spin control

if u just turn dsc off your not goin nowhere when u drop the clutch..remeber turn asc off too..



I suggest u never touch the dsc button tho..thats why our cars are so bad azz..u cant really mess up.. unless u hit that selfdestruct button..
__________________

"We've come a long long way together. Through the hard times and the good.
I have to celebrate you baby,.. I have to praise you like I should.."

Last edited by MachRc; 01-06-2003 at 05:26 PM.
MachRc is online now   Reply With Quote
Old 01-06-2003, 05:57 PM   #16
biggiestuff
Registered User
 
Join Date: Dec 1969
Location: Houston
Posts: 368
My Ride: E46 POS
Send a message via AIM to biggiestuff
for the 2001's I notice that when you hold it down there is no brake light that comes up like the 2002's. The DSC just stays amber and you can't turn it off anymore. Does that mean DSC and ASC is completely off, and is there any other way to turn it back on w/o hvaing to restart the car?
biggiestuff is offline   Reply With Quote
Old 01-06-2003, 06:00 PM   #17
MachRc
E46Fanatic
 
MachRc's Avatar
 
Join Date: Sep 2002
Location: City of Angels
Posts: 6,490
My Ride: 2003 Technik S1 M3
Quote:
Originally posted by biggiestuff
for the 2001's I notice that when you hold it down there is no brake light that comes up like the 2002's. The DSC just stays amber and you can't turn it off anymore. Does that mean DSC and ASC is completely off, and is there any other way to turn it back on w/o hvaing to restart the car?
i have 2001...start the car...push and hold DSC button..hold ...hold...then bam a yellow brake light apears..
if you got good rubber it'll bone out when you drop clutch...i usually drop it 3.5k-4k rpm.
ZOOm ZOOm ZOOm
__________________

"We've come a long long way together. Through the hard times and the good.
I have to celebrate you baby,.. I have to praise you like I should.."
MachRc is online now   Reply With Quote
Old 01-06-2003, 06:04 PM   #18
tpzblu330ci
TheOnlyConstantIsChange
 
Join Date: May 2002
Location: Santa Cruz, CA
Posts: 4,235
My Ride: '11 Golf TDI
Send a message via AIM to tpzblu330ci
Quote:
Originally posted by MachRc
remember if u street racing..turning of dsc wont do jack...
you still cant burn out...turn DSC and ASC off. u know, the hold the dsc button 5 sec til brake light turn yellow trick.
becareful dsc if for turning..and asc if for tire spin control

if u just turn dsc off your not goin nowhere when u drop the clutch..remeber turn asc off too..



I suggest u never touch the dsc button tho..thats why our cars are so bad azz..u cant really mess up.. unless u hit that selfdestruct button..

Tires still spin without turning the complete Traction Control System off.
__________________
"Every man gotta right to decide his own destiny." - Bob Marley

'93 Toyota LandCruiser
tpzblu330ci is offline   Reply With Quote
Old 01-06-2003, 06:14 PM   #19
MachRc
E46Fanatic
 
MachRc's Avatar
 
Join Date: Sep 2002
Location: City of Angels
Posts: 6,490
My Ride: 2003 Technik S1 M3
Quote:
Originally posted by tpzblu330ci



Tires still spin without turning the complete Traction Control System off.
yea like 1 sec..thenn errrrr ..like not goin nowhere..dat how i got smoked by a 4runner..
__________________

"We've come a long long way together. Through the hard times and the good.
I have to celebrate you baby,.. I have to praise you like I should.."
MachRc is online now   Reply With Quote
Old 01-06-2003, 06:18 PM   #20
tpzblu330ci
TheOnlyConstantIsChange
 
Join Date: May 2002
Location: Santa Cruz, CA
Posts: 4,235
My Ride: '11 Golf TDI
Send a message via AIM to tpzblu330ci
Quote:
Originally posted by MachRc


yea like 1 sec..thenn errrrr ..like not goin nowhere..dat how i got smoked by a 4runner..
Not for me
__________________
"Every man gotta right to decide his own destiny." - Bob Marley

'93 Toyota LandCruiser
tpzblu330ci is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 01:09 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use